diff --git a/app/devices/device_edit.php b/app/devices/device_edit.php
index 7fcc2109bb..1b198ee4ea 100644
--- a/app/devices/device_edit.php
+++ b/app/devices/device_edit.php
@@ -332,19 +332,25 @@
 									$array['devices'][0]['device_lines'][$y]['sip_port'] = $row["sip_port"];
 								}
 								else {
-									$array['devices'][0]['device_lines'][$y]['sip_port'] = $_SESSION['provision']['line_sip_port']['numeric'];
+									if ($action == "add") {
+										$array['devices'][0]['device_lines'][$y]['sip_port'] = $_SESSION['provision']['line_sip_port']['numeric'];
+									}
 								}
 								if (permission_exists('device_line_transport')) {
-													$array['devices'][0]['device_lines'][$y]['sip_transport'] = $row["sip_transport"];
+									$array['devices'][0]['device_lines'][$y]['sip_transport'] = $row["sip_transport"];
 								}
 								else {
-									$array['devices'][0]['device_lines'][$y]['sip_transport'] = $_SESSION['provision']['line_sip_transport']['text'];
+									if ($action == "add") {
+										$array['devices'][0]['device_lines'][$y]['sip_transport'] = $_SESSION['provision']['line_sip_transport']['text'];
+									}
 								}
 								if (permission_exists('device_line_register_expires')) {
 									$array['devices'][0]['device_lines'][$y]['register_expires'] = $row["register_expires"];
 								}
 								else {
-									$array['devices'][0]['device_lines'][$y]['register_expires'] = $_SESSION['provision']['line_register_expires']['numeric'];
+									if ($action == "add") {
+										$array['devices'][0]['device_lines'][$y]['register_expires'] = $_SESSION['provision']['line_register_expires']['numeric'];
+									}
 								}
 								$y++;
 							}